Pregled bibliografske jedinice broj: 165180
Gravity model TUM-2sp based on the energy balance approach and kinematic CHAMP orbits
Gravity model TUM-2sp based on the energy balance approach and kinematic CHAMP orbits // Earth Observation with CHAMP - Results from Three Years in Orbit / Reigber, Ch. ; Lühr, H. ; Schwintzer, P. ; Wickert, J. (ur.).
Heidelberg: Springer, 2004. str. 13-18
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Naslov
Gravity model TUM-2sp based on the energy balance approach and kinematic CHAMP orbits
Autori
Földvary, L. ; Švehla, Dražen ; Gerlach, Ch. ; Wermuth, M. ; Gruber, Th. ; Rummel, R. ; Rothacher, M. ; Frommknecht, B. ; Peters, Th. ; Steigenberger, P.
Vrsta, podvrsta i kategorija rada
Poglavlja u knjigama, znanstveni
Knjiga
Earth Observation with CHAMP - Results from Three Years in Orbit
Urednik/ci
Reigber, Ch. ; Lühr, H. ; Schwintzer, P. ; Wickert, J.
Izdavač
Springer
Grad
Heidelberg
Godina
2004
Raspon stranica
13-18
ISBN
3-540-22804-7
Ključne riječi
One year CHAMP data, gravity field, energy balance approach
Sažetak
We have used one year of CHAMP data for deriving a gravity field model based on he energy balance approach. In order to avoid the use of any a priori gravity field information, purely kinematic orbits have been computed from GPS measurements only. Subsequently velocities have been derived from these kinematic positions by two different methods, namely smoothing splines and Newton-Gregory interpolation. Using the principle of energy conservation, the satellite’ s positions and velocities are transformed into gravitational potential. CHAMP on-board micro-accelerometry is used to correct for surface forces. For spherical harmonic analysis the so-called direct approach has been implemented using the full normal equation matrix. The model, called TUM2Sp, was found to be a more accurate gravity field than EIGE-2 model.
Izvorni jezik
Engleski
Znanstvena područja
Geodezija
